1381519 has 2 divisors, whose sum is σ = 1381520. Its totient is φ = 1381518.

The previous prime is 1381517. The next prime is 1381529. The reversal of 1381519 is 9151831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1381519 - 2¹ = 1381517 is a prime.

It is a super-2 number, since 2×1381519² = 3817189494722, which contains 22 as substring.

Together with 1381517, it forms a pair of twin primes.

1381519 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1381517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690759 + 690760.

It is an arithmetic number, because the mean of its divisors is an integer number (690760).

2^1381519 is an apocalyptic number.

1381519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381519 is an equidigital number, since it uses as much as digits as its factorization.

1381519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080, while the sum is 28.

The square root of 1381519 is about 1175.3803639673. The cubic root of 1381519 is about 111.3744623958.

The spelling of 1381519 in words is "one million, three hundred eighty-one thousand, five hundred nineteen".